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61
(ii) Deaf Centre.—During the year your Committee pro"vided
a "Multitone" apparatus, of which the makers give
:the following description:—
"The installation consists of a combined radio set and
speech amplifier, having its output divided between a loud
speaker and a number of telephones, each of which is controlled
independently with respect to volume and tone.
The tone controls enable the point of maximum amplification
to be moved from low notes to high or middle notes,
thus allowing adjustments for a large variety of typical
audiograms. The output1 of the two telephones used by each
pupil are not alike, the low and middle notes having been
considerably attenuated in one of the telephones. This is
known as 'Unmasked Hearing ' and prevents the drowning
of the high notes in speech and music by the low and
middle notes when the volume of sound becomes considerable."
The Centre is being increasingly used for cases of aphasia
-with excellent results.
An Audiometer is available in the School Medical Department
for the testing of residual hearing, and is used at the
Centre when required.
Miss Coates has kindly contributed the following report
on the work done in 1935:—

"No children have left during the year and six children
were admitted:—
Two young deaf children, aged 3 and 4 years respectively.
Two girls—partially deaf.
Two girls—aphasic.